/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:45:20,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:45:20,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:45:20,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:45:20,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:45:20,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:45:20,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:45:20,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:45:20,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:45:20,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:45:20,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:45:20,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:45:20,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:45:20,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:45:20,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:45:20,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:45:20,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:45:20,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:45:20,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:45:20,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:45:20,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:45:20,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:45:20,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:45:20,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:45:20,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 17:45:20,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:45:20,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:45:20,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:45:20,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:45:20,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:45:20,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:45:20,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:45:20,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:45:20,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:45:20,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:45:20,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:45:20,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 17:45:20,381 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:45:20,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:45:20,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:45:20,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:45:20,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:45:20,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:45:20,384 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:45:20,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:45:20,384 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:45:20,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:45:20,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:45:20,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:45:20,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:45:20,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:45:20,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:45:20,385 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:45:20,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:45:20,386 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:45:20,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:45:20,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:45:20,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:45:20,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:45:20,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:45:20,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:45:20,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:45:20,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:45:20,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:45:20,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:45:20,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:45:20,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:45:20,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:45:20,389 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:45:20,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:45:20,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:45:20,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:45:20,603 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:45:20,604 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:45:20,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-01-27 17:45:21,766 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:45:22,024 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:45:22,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-01-27 17:45:22,039 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6372d98a5/29999fadcbc048bdbc1b772571fd438f/FLAG1b7af8809 [2023-01-27 17:45:22,050 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6372d98a5/29999fadcbc048bdbc1b772571fd438f [2023-01-27 17:45:22,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:45:22,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:45:22,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:45:22,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:45:22,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:45:22,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54af31b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22, skipping insertion in model container [2023-01-27 17:45:22,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:45:22,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:45:22,222 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 17:45:22,371 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2023-01-27 17:45:22,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2023-01-27 17:45:22,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:45:22,404 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:45:22,427 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 17:45:22,453 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2023-01-27 17:45:22,460 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2023-01-27 17:45:22,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:45:22,489 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 17:45:22,490 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 17:45:22,490 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 17:45:22,495 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:45:22,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22 WrapperNode [2023-01-27 17:45:22,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:45:22,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:45:22,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:45:22,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:45:22,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,545 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-01-27 17:45:22,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:45:22,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:45:22,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:45:22,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:45:22,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:45:22,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:45:22,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:45:22,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:45:22,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (1/1) ... [2023-01-27 17:45:22,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:45:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:45:22,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 17:45:22,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 17:45:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:45:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-01-27 17:45:22,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-01-27 17:45:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-01-27 17:45:22,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-01-27 17:45:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:45:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 17:45:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:45:22,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:45:22,653 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 17:45:22,750 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:45:22,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:45:22,951 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:45:22,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:45:22,961 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-27 17:45:22,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:45:22 BoogieIcfgContainer [2023-01-27 17:45:22,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:45:22,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:45:22,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:45:22,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:45:22,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:45:22" (1/3) ... [2023-01-27 17:45:22,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513a30c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:45:22, skipping insertion in model container [2023-01-27 17:45:22,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:45:22" (2/3) ... [2023-01-27 17:45:22,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513a30c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:45:22, skipping insertion in model container [2023-01-27 17:45:22,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:45:22" (3/3) ... [2023-01-27 17:45:22,971 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-01-27 17:45:22,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:45:22,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 17:45:22,986 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:45:23,076 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 17:45:23,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 129 transitions, 274 flow [2023-01-27 17:45:23,175 INFO L130 PetriNetUnfolder]: 24/127 cut-off events. [2023-01-27 17:45:23,175 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:45:23,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 24/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 253 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-01-27 17:45:23,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 129 transitions, 274 flow [2023-01-27 17:45:23,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 118 transitions, 245 flow [2023-01-27 17:45:23,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:45:23,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 118 transitions, 245 flow [2023-01-27 17:45:23,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 118 transitions, 245 flow [2023-01-27 17:45:23,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 118 transitions, 245 flow [2023-01-27 17:45:23,240 INFO L130 PetriNetUnfolder]: 24/118 cut-off events. [2023-01-27 17:45:23,241 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:45:23,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 118 events. 24/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 249 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2023-01-27 17:45:23,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 4988 [2023-01-27 17:45:24,791 INFO L134 LiptonReduction]: Checked pairs total: 14233 [2023-01-27 17:45:24,791 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-01-27 17:45:24,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:45:24,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b2dd853, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:45:24,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 17:45:24,812 INFO L130 PetriNetUnfolder]: 2/10 cut-off events. [2023-01-27 17:45:24,812 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:45:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:24,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-27 17:45:24,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:24,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash 16739404, now seen corresponding path program 1 times [2023-01-27 17:45:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:24,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120754678] [2023-01-27 17:45:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120754678] [2023-01-27 17:45:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120754678] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:24,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:24,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:45:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015692022] [2023-01-27 17:45:24,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 17:45:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 17:45:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 17:45:24,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 198 [2023-01-27 17:45:24,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 137 flow. Second operand has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:24,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:24,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 198 [2023-01-27 17:45:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:25,160 INFO L130 PetriNetUnfolder]: 832/1381 cut-off events. [2023-01-27 17:45:25,161 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-01-27 17:45:25,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1381 events. 832/1381 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6767 event pairs, 432 based on Foata normal form. 47/987 useless extension candidates. Maximal degree in co-relation 2454. Up to 1184 conditions per place. [2023-01-27 17:45:25,171 INFO L137 encePairwiseOnDemand]: 192/198 looper letters, 39 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-01-27 17:45:25,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 203 flow [2023-01-27 17:45:25,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 17:45:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 17:45:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 271 transitions. [2023-01-27 17:45:25,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6843434343434344 [2023-01-27 17:45:25,183 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 271 transitions. [2023-01-27 17:45:25,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 271 transitions. [2023-01-27 17:45:25,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:25,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 271 transitions. [2023-01-27 17:45:25,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,193 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,194 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 137 flow. Second operand 2 states and 271 transitions. [2023-01-27 17:45:25,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 203 flow [2023-01-27 17:45:25,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 17:45:25,199 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 120 flow [2023-01-27 17:45:25,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-01-27 17:45:25,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2023-01-27 17:45:25,204 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 120 flow [2023-01-27 17:45:25,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:25,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:25,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:45:25,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:25,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -932705631, now seen corresponding path program 1 times [2023-01-27 17:45:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:25,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101019152] [2023-01-27 17:45:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:25,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:25,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:25,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101019152] [2023-01-27 17:45:25,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101019152] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:25,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:25,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:45:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280831707] [2023-01-27 17:45:25,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:25,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:45:25,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:25,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:45:25,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:45:25,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:25,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:25,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:25,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:25,493 INFO L130 PetriNetUnfolder]: 1009/1696 cut-off events. [2023-01-27 17:45:25,493 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-01-27 17:45:25,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1696 events. 1009/1696 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8721 event pairs, 354 based on Foata normal form. 0/1158 useless extension candidates. Maximal degree in co-relation 3199. Up to 1011 conditions per place. [2023-01-27 17:45:25,499 INFO L137 encePairwiseOnDemand]: 190/198 looper letters, 58 selfloop transitions, 5 changer transitions 2/80 dead transitions. [2023-01-27 17:45:25,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 295 flow [2023-01-27 17:45:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:45:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:45:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-01-27 17:45:25,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2023-01-27 17:45:25,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-01-27 17:45:25,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-01-27 17:45:25,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:25,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-01-27 17:45:25,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,506 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 120 flow. Second operand 3 states and 386 transitions. [2023-01-27 17:45:25,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 295 flow [2023-01-27 17:45:25,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:45:25,509 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 154 flow [2023-01-27 17:45:25,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-01-27 17:45:25,510 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-01-27 17:45:25,510 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 154 flow [2023-01-27 17:45:25,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:25,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:25,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:45:25,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:25,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1147973996, now seen corresponding path program 1 times [2023-01-27 17:45:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584933380] [2023-01-27 17:45:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584933380] [2023-01-27 17:45:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584933380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:25,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:25,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:45:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291818373] [2023-01-27 17:45:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:25,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:45:25,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:45:25,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:45:25,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:25,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:25,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:25,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:25,722 INFO L130 PetriNetUnfolder]: 881/1496 cut-off events. [2023-01-27 17:45:25,722 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-01-27 17:45:25,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3030 conditions, 1496 events. 881/1496 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7487 event pairs, 358 based on Foata normal form. 38/1203 useless extension candidates. Maximal degree in co-relation 3025. Up to 1004 conditions per place. [2023-01-27 17:45:25,728 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 52 selfloop transitions, 4 changer transitions 6/77 dead transitions. [2023-01-27 17:45:25,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 77 transitions, 313 flow [2023-01-27 17:45:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:45:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:45:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-01-27 17:45:25,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6447811447811448 [2023-01-27 17:45:25,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-01-27 17:45:25,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-01-27 17:45:25,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:25,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-01-27 17:45:25,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,735 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 154 flow. Second operand 3 states and 383 transitions. [2023-01-27 17:45:25,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 77 transitions, 313 flow [2023-01-27 17:45:25,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:45:25,740 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2023-01-27 17:45:25,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-01-27 17:45:25,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-01-27 17:45:25,742 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2023-01-27 17:45:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:25,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:45:25,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:25,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash -451012777, now seen corresponding path program 1 times [2023-01-27 17:45:25,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:25,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87150012] [2023-01-27 17:45:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:25,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87150012] [2023-01-27 17:45:25,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87150012] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:25,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:25,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:45:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013267119] [2023-01-27 17:45:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:25,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:45:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:25,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:45:25,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:45:25,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 198 [2023-01-27 17:45:25,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:25,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:25,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 198 [2023-01-27 17:45:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:26,089 INFO L130 PetriNetUnfolder]: 1686/2765 cut-off events. [2023-01-27 17:45:26,089 INFO L131 PetriNetUnfolder]: For 715/715 co-relation queries the response was YES. [2023-01-27 17:45:26,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 2765 events. 1686/2765 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14372 event pairs, 462 based on Foata normal form. 0/2288 useless extension candidates. Maximal degree in co-relation 5752. Up to 1442 conditions per place. [2023-01-27 17:45:26,103 INFO L137 encePairwiseOnDemand]: 193/198 looper letters, 71 selfloop transitions, 4 changer transitions 12/98 dead transitions. [2023-01-27 17:45:26,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 438 flow [2023-01-27 17:45:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:45:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:45:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-01-27 17:45:26,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2023-01-27 17:45:26,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-01-27 17:45:26,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-01-27 17:45:26,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:26,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-01-27 17:45:26,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,114 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 3 states and 372 transitions. [2023-01-27 17:45:26,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 438 flow [2023-01-27 17:45:26,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:45:26,121 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 184 flow [2023-01-27 17:45:26,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-01-27 17:45:26,123 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-01-27 17:45:26,123 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 184 flow [2023-01-27 17:45:26,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:26,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:26,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 17:45:26,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:26,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash 871684335, now seen corresponding path program 2 times [2023-01-27 17:45:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:26,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024702170] [2023-01-27 17:45:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:26,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024702170] [2023-01-27 17:45:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024702170] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:26,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:26,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976544069] [2023-01-27 17:45:26,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:26,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:26,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:26,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:26,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:26,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:26,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:26,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:26,809 INFO L130 PetriNetUnfolder]: 4808/7901 cut-off events. [2023-01-27 17:45:26,810 INFO L131 PetriNetUnfolder]: For 1496/1502 co-relation queries the response was YES. [2023-01-27 17:45:26,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 7901 events. 4808/7901 cut-off events. For 1496/1502 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 48565 event pairs, 770 based on Foata normal form. 60/6689 useless extension candidates. Maximal degree in co-relation 16675. Up to 2300 conditions per place. [2023-01-27 17:45:26,850 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 143 selfloop transitions, 6 changer transitions 1/166 dead transitions. [2023-01-27 17:45:26,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 768 flow [2023-01-27 17:45:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 672 transitions. [2023-01-27 17:45:26,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6787878787878788 [2023-01-27 17:45:26,852 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 672 transitions. [2023-01-27 17:45:26,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 672 transitions. [2023-01-27 17:45:26,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:26,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 672 transitions. [2023-01-27 17:45:26,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.4) internal successors, (672), 5 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,857 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 184 flow. Second operand 5 states and 672 transitions. [2023-01-27 17:45:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 768 flow [2023-01-27 17:45:26,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 166 transitions, 754 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:45:26,866 INFO L231 Difference]: Finished difference. Result has 63 places, 68 transitions, 228 flow [2023-01-27 17:45:26,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=68} [2023-01-27 17:45:26,868 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2023-01-27 17:45:26,869 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 68 transitions, 228 flow [2023-01-27 17:45:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:26,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:45:26,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:26,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 617069377, now seen corresponding path program 3 times [2023-01-27 17:45:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:26,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307688931] [2023-01-27 17:45:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:26,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:26,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307688931] [2023-01-27 17:45:26,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307688931] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408548327] [2023-01-27 17:45:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:26,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:26,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:26,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:26,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 198 [2023-01-27 17:45:26,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:26,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:26,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 198 [2023-01-27 17:45:26,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:27,631 INFO L130 PetriNetUnfolder]: 5269/8776 cut-off events. [2023-01-27 17:45:27,631 INFO L131 PetriNetUnfolder]: For 2391/2427 co-relation queries the response was YES. [2023-01-27 17:45:27,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19146 conditions, 8776 events. 5269/8776 cut-off events. For 2391/2427 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 57280 event pairs, 1465 based on Foata normal form. 268/7859 useless extension candidates. Maximal degree in co-relation 19136. Up to 4341 conditions per place. [2023-01-27 17:45:27,662 INFO L137 encePairwiseOnDemand]: 184/198 looper letters, 85 selfloop transitions, 16 changer transitions 16/134 dead transitions. [2023-01-27 17:45:27,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 639 flow [2023-01-27 17:45:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:27,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-01-27 17:45:27,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646464646464646 [2023-01-27 17:45:27,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-01-27 17:45:27,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-01-27 17:45:27,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:27,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-01-27 17:45:27,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:27,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:27,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:27,673 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 228 flow. Second operand 5 states and 559 transitions. [2023-01-27 17:45:27,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 639 flow [2023-01-27 17:45:27,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 134 transitions, 639 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:45:27,683 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 355 flow [2023-01-27 17:45:27,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2023-01-27 17:45:27,687 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2023-01-27 17:45:27,687 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 355 flow [2023-01-27 17:45:27,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:27,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:27,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:27,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 17:45:27,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:27,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash 767352201, now seen corresponding path program 4 times [2023-01-27 17:45:27,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:27,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079060236] [2023-01-27 17:45:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:27,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:27,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079060236] [2023-01-27 17:45:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079060236] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:27,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249421676] [2023-01-27 17:45:27,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:27,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:27,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 355 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:27,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:27,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:27,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:28,737 INFO L130 PetriNetUnfolder]: 7311/12449 cut-off events. [2023-01-27 17:45:28,737 INFO L131 PetriNetUnfolder]: For 8453/9135 co-relation queries the response was YES. [2023-01-27 17:45:28,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32187 conditions, 12449 events. 7311/12449 cut-off events. For 8453/9135 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 86410 event pairs, 1424 based on Foata normal form. 378/11718 useless extension candidates. Maximal degree in co-relation 32173. Up to 3446 conditions per place. [2023-01-27 17:45:28,790 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 160 selfloop transitions, 10 changer transitions 20/210 dead transitions. [2023-01-27 17:45:28,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 210 transitions, 1299 flow [2023-01-27 17:45:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 676 transitions. [2023-01-27 17:45:28,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6828282828282828 [2023-01-27 17:45:28,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 676 transitions. [2023-01-27 17:45:28,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 676 transitions. [2023-01-27 17:45:28,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:28,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 676 transitions. [2023-01-27 17:45:28,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:28,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:28,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:28,796 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 355 flow. Second operand 5 states and 676 transitions. [2023-01-27 17:45:28,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 210 transitions, 1299 flow [2023-01-27 17:45:28,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 210 transitions, 1277 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 17:45:28,815 INFO L231 Difference]: Finished difference. Result has 77 places, 87 transitions, 428 flow [2023-01-27 17:45:28,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=77, PETRI_TRANSITIONS=87} [2023-01-27 17:45:28,816 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-01-27 17:45:28,816 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 87 transitions, 428 flow [2023-01-27 17:45:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:28,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:28,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 17:45:28,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:28,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:28,818 INFO L85 PathProgramCache]: Analyzing trace with hash -436816581, now seen corresponding path program 1 times [2023-01-27 17:45:28,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:28,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009620490] [2023-01-27 17:45:28,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:28,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009620490] [2023-01-27 17:45:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009620490] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:28,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635232634] [2023-01-27 17:45:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:28,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 198 [2023-01-27 17:45:28,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 87 transitions, 428 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:28,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:28,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 198 [2023-01-27 17:45:28,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:29,667 INFO L130 PetriNetUnfolder]: 5926/10293 cut-off events. [2023-01-27 17:45:29,668 INFO L131 PetriNetUnfolder]: For 7317/8062 co-relation queries the response was YES. [2023-01-27 17:45:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25908 conditions, 10293 events. 5926/10293 cut-off events. For 7317/8062 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 70943 event pairs, 2070 based on Foata normal form. 418/9678 useless extension candidates. Maximal degree in co-relation 25891. Up to 6104 conditions per place. [2023-01-27 17:45:29,717 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 78 selfloop transitions, 9 changer transitions 8/130 dead transitions. [2023-01-27 17:45:29,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 767 flow [2023-01-27 17:45:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:29,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-01-27 17:45:29,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080808080808081 [2023-01-27 17:45:29,719 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-01-27 17:45:29,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-01-27 17:45:29,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:29,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-01-27 17:45:29,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:29,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:29,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:29,722 INFO L175 Difference]: Start difference. First operand has 77 places, 87 transitions, 428 flow. Second operand 5 states and 602 transitions. [2023-01-27 17:45:29,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 767 flow [2023-01-27 17:45:29,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 130 transitions, 759 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 17:45:29,737 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 474 flow [2023-01-27 17:45:29,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2023-01-27 17:45:29,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2023-01-27 17:45:29,738 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 474 flow [2023-01-27 17:45:29,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:29,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:29,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:29,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 17:45:29,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:29,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2145215388, now seen corresponding path program 1 times [2023-01-27 17:45:29,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:29,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946834699] [2023-01-27 17:45:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:29,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946834699] [2023-01-27 17:45:29,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946834699] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:29,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:29,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:29,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449644498] [2023-01-27 17:45:29,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:29,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:29,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 198 [2023-01-27 17:45:29,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:29,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:29,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 198 [2023-01-27 17:45:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:30,609 INFO L130 PetriNetUnfolder]: 5307/9768 cut-off events. [2023-01-27 17:45:30,610 INFO L131 PetriNetUnfolder]: For 9352/9941 co-relation queries the response was YES. [2023-01-27 17:45:30,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26643 conditions, 9768 events. 5307/9768 cut-off events. For 9352/9941 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 68526 event pairs, 1905 based on Foata normal form. 206/9125 useless extension candidates. Maximal degree in co-relation 26622. Up to 5865 conditions per place. [2023-01-27 17:45:30,650 INFO L137 encePairwiseOnDemand]: 191/198 looper letters, 81 selfloop transitions, 10 changer transitions 12/136 dead transitions. [2023-01-27 17:45:30,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 136 transitions, 841 flow [2023-01-27 17:45:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 605 transitions. [2023-01-27 17:45:30,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2023-01-27 17:45:30,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 605 transitions. [2023-01-27 17:45:30,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 605 transitions. [2023-01-27 17:45:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 605 transitions. [2023-01-27 17:45:30,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:30,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:30,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:30,656 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 474 flow. Second operand 5 states and 605 transitions. [2023-01-27 17:45:30,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 136 transitions, 841 flow [2023-01-27 17:45:30,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 839 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 17:45:30,674 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 483 flow [2023-01-27 17:45:30,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-01-27 17:45:30,675 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2023-01-27 17:45:30,675 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 483 flow [2023-01-27 17:45:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:30,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:30,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:30,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 17:45:30,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:30,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1581251780, now seen corresponding path program 1 times [2023-01-27 17:45:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600560904] [2023-01-27 17:45:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600560904] [2023-01-27 17:45:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600560904] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752581817] [2023-01-27 17:45:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:30,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:30,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 483 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:30,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:30,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:30,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:31,361 INFO L130 PetriNetUnfolder]: 3708/6624 cut-off events. [2023-01-27 17:45:31,361 INFO L131 PetriNetUnfolder]: For 8247/8622 co-relation queries the response was YES. [2023-01-27 17:45:31,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20100 conditions, 6624 events. 3708/6624 cut-off events. For 8247/8622 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 41361 event pairs, 1227 based on Foata normal form. 180/6312 useless extension candidates. Maximal degree in co-relation 20075. Up to 3259 conditions per place. [2023-01-27 17:45:31,386 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 75 selfloop transitions, 6 changer transitions 52/154 dead transitions. [2023-01-27 17:45:31,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 154 transitions, 1081 flow [2023-01-27 17:45:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-01-27 17:45:31,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6373737373737374 [2023-01-27 17:45:31,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-01-27 17:45:31,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-01-27 17:45:31,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:31,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-01-27 17:45:31,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,393 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 483 flow. Second operand 5 states and 631 transitions. [2023-01-27 17:45:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 154 transitions, 1081 flow [2023-01-27 17:45:31,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 154 transitions, 1079 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 17:45:31,414 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 478 flow [2023-01-27 17:45:31,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2023-01-27 17:45:31,416 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-01-27 17:45:31,416 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 478 flow [2023-01-27 17:45:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:45:31,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:45:31,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 17:45:31,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 17:45:31,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:45:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1123222480, now seen corresponding path program 2 times [2023-01-27 17:45:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:45:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424243279] [2023-01-27 17:45:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:45:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:45:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:45:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:45:31,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:45:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424243279] [2023-01-27 17:45:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424243279] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:45:31,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:45:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:45:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62215643] [2023-01-27 17:45:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:45:31,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 17:45:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:45:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 17:45:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 17:45:31,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 198 [2023-01-27 17:45:31,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:45:31,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 198 [2023-01-27 17:45:31,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:45:31,723 INFO L130 PetriNetUnfolder]: 1161/2260 cut-off events. [2023-01-27 17:45:31,724 INFO L131 PetriNetUnfolder]: For 3653/3838 co-relation queries the response was YES. [2023-01-27 17:45:31,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7078 conditions, 2260 events. 1161/2260 cut-off events. For 3653/3838 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 12822 event pairs, 288 based on Foata normal form. 162/2284 useless extension candidates. Maximal degree in co-relation 7050. Up to 694 conditions per place. [2023-01-27 17:45:31,734 INFO L137 encePairwiseOnDemand]: 194/198 looper letters, 0 selfloop transitions, 0 changer transitions 117/117 dead transitions. [2023-01-27 17:45:31,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 791 flow [2023-01-27 17:45:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:45:31,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:45:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-27 17:45:31,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2023-01-27 17:45:31,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-27 17:45:31,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-27 17:45:31,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:45:31,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-27 17:45:31,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,740 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 478 flow. Second operand 5 states and 615 transitions. [2023-01-27 17:45:31,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 791 flow [2023-01-27 17:45:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 717 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-01-27 17:45:31,752 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-01-27 17:45:31,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-01-27 17:45:31,753 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2023-01-27 17:45:31,753 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-01-27 17:45:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:45:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 17:45:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 17:45:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-27 17:45:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-01-27 17:45:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-27 17:45:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-27 17:45:31,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 17:45:31,761 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1] [2023-01-27 17:45:31,765 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 17:45:31,765 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 17:45:31,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 05:45:31 BasicIcfg [2023-01-27 17:45:31,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 17:45:31,770 INFO L158 Benchmark]: Toolchain (without parser) took 9716.70ms. Allocated memory was 583.0MB in the beginning and 1.3GB in the end (delta: 740.3MB). Free memory was 533.3MB in the beginning and 1.1GB in the end (delta: -575.2MB). Peak memory consumption was 166.7MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,770 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:45:31,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.16ms. Allocated memory is still 583.0MB. Free memory was 533.3MB in the beginning and 512.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.39ms. Allocated memory is still 583.0MB. Free memory was 512.4MB in the beginning and 510.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,770 INFO L158 Benchmark]: Boogie Preprocessor took 24.52ms. Allocated memory is still 583.0MB. Free memory was 510.7MB in the beginning and 508.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,771 INFO L158 Benchmark]: RCFGBuilder took 393.08ms. Allocated memory is still 583.0MB. Free memory was 508.7MB in the beginning and 493.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,771 INFO L158 Benchmark]: TraceAbstraction took 8803.58ms. Allocated memory was 583.0MB in the beginning and 1.3GB in the end (delta: 740.3MB). Free memory was 493.1MB in the beginning and 1.1GB in the end (delta: -615.4MB). Peak memory consumption was 126.9MB. Max. memory is 16.0GB. [2023-01-27 17:45:31,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 354.4MB. Free memory is still 302.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 442.16ms. Allocated memory is still 583.0MB. Free memory was 533.3MB in the beginning and 512.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.39ms. Allocated memory is still 583.0MB. Free memory was 512.4MB in the beginning and 510.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.52ms. Allocated memory is still 583.0MB. Free memory was 510.7MB in the beginning and 508.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 393.08ms. Allocated memory is still 583.0MB. Free memory was 508.7MB in the beginning and 493.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8803.58ms. Allocated memory was 583.0MB in the beginning and 1.3GB in the end (delta: 740.3MB). Free memory was 493.1MB in the beginning and 1.1GB in the end (delta: -615.4MB). Peak memory consumption was 126.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 101 PlacesBefore, 53 PlacesAfterwards, 118 TransitionsBefore, 64 TransitionsAfterwards, 4988 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 69 TotalNumberOfCompositions, 14233 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5643, independent: 5307, independent conditional: 0, independent unconditional: 5307, dependent: 336, dependent conditional: 0, dependent unconditional: 336, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2194, independent: 2148, independent conditional: 0, independent unconditional: 2148, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5643, independent: 3159, independent conditional: 0, independent unconditional: 3159, dependent: 290, dependent conditional: 0, dependent unconditional: 290, unknown: 2194, unknown conditional: 0, unknown unconditional: 2194] , Statistics on independence cache: Total cache size (in pairs): 397, Positive cache size: 364, Positive conditional cache size: 0, Positive unconditional cache size: 364, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 504 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 504 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1669 IncrementalHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 53 mSDtfsCounter, 1669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=483occurred in iteration=9, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 17:45:31,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...